Evaluation of slip-traction characteristics of polymeric transfer films

Experiments carried out on Batelle's rolling disk apparatus to determine the traction characteristics of polymeric transfer films developed under cryogenic conditions are described. The analyses reveal that the presence of a soft layer can significantly decrease the slope of the traction curves in a bearing. The measurement of low traction indicates the presence of soft layer in the contact zone; if this thin film can be maintained, the bearing stability may be maintained.